Active type soil-absorbed hydrocarbon sampling drill tool

An active drilling tool technology, applied in the field of oil and gas geochemical exploration, can solve problems such as inability to reflect in-situ hydrocarbon information, inability to guarantee the sealing of drilling holes, failure of adsorbents due to moisture, etc., to improve stability and anti-interference ability , Improve the degree of sampling automation, the effect of simple structure

Inactive Publication Date: 2018-11-02
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the process of sampling soil adsorbed hydrocarbons, it is necessary to use a drilling tool to drill a hole first, then connect the gas line with an adsorption tube and extend it into the borehole with an atmospheric sampler for active suction sampling, which has the following defects: cumbersome operation, poor sampling A variety of tools need to be carried; because the ho

Method used

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  • Active type soil-absorbed hydrocarbon sampling drill tool
  • Active type soil-absorbed hydrocarbon sampling drill tool
  • Active type soil-absorbed hydrocarbon sampling drill tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) Locate to the required sampling point, take out the drilling tool, and install the activated adsorption tube 8 in the detachable part of the drilling tool;

[0048] (2) Drill the drill pipe to the required sampling depth of 1.5m, subject to the scale shown on the drill pipe;

[0049] (3) Open the atmospheric sampler 11, use environment sensor 14 to record parameters such as temperature, humidity, air pressure, flow when sampling simultaneously;

[0050](4) The typical gas flow rate is 0.1L / min, and the collection time is 20 minutes. After the gas sampling is completed, turn off the gas sampling pump, and at the same time take 10ml of free gas sample from the sampling port of the syringe, and inject it into a sample bottle filled with saturated saline ;

[0051] (5) Exit the drilling tool, take out the adsorption tube after the sampling is completed, keep it sealed, and the sampling ends;

[0052] (6) Take the adsorption tube back to the laboratory for thermal deso...

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Abstract

The invention provides an active type soil-absorbed hydrocarbon sampling drill tool which comprises a drill tool main body; the drill tool main body comprises a drill rod adopting a hollow structure,a drill bit movably connected with the drill rod and adopting a hollow structure, a handle connected with the drill rod in a T-shaped manner and positioned on a side opposite to the drill bit, an absorbed hydrocarbon sampling device, a waterproof and breathable component, a sampling pipe and an air sampling device; collecting holes are formed in a tail end, opposite to the drill rod, of the drillbit; the absorbed hydrocarbon sampling device comprises a filter element positioned inside the hollow drill bit and connected with the collecting holes; the waterproof and breathable component positioned inside the hollow drill bit and connected with the filter element; the sampling pipe is positioned inside the hollow drill rod, one end of the sampling pipe is connected with the waterproof and breathable component, and the other end is connected with a collecting device; and the air sampling device is arranged in the air and connected with the collecting device through a pipe. According to the drill tool provided by the invention, the absorbed hydrocarbon sampling device is integrated with the drill tool, and various parameters can be monitored at the same time, and so that the integration level and the degree of automation are high.

Description

technical field [0001] The invention relates to an active soil adsorption hydrocarbon sampling drilling tool, which belongs to the field of oil and gas geochemical exploration. Background technique [0002] The adsorption silk method is to use an adsorbent to adsorb trace gaseous hydrocarbons in the formation, and then use chromatography-mass spectrometry to detect hydrocarbons through thermal desorption. For landmark geochemical exploration research, more information on hydrocarbon components can be obtained, and geochemical anomalies can be accurately described. The actual exploration application in many areas shows that it is one of the effective geochemical exploration methods. [0003] There are two main types of adsorption silk method sampling: passive adsorption and active equilibrium. The main methods of passive adsorption are on-site wire embedding and canning balance. It takes a long time to balance, and the on-site wire embedding has difficulty in construction a...

Claims

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Application Information

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IPC IPC(8): G01N1/24
CPCG01N1/2273G01N1/24
Inventor 高俊阳卢丽杨帆许科伟黄欣顾磊汤玉平
Owner CHINA PETROLEUM & CHEM CORP
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